Near-infrared (NIR) technology wound imaging device that measures tissue oxygen saturation (StO2), oxyhemoglobin and deoxyhemoglobin in superficial tissue. Mapping oxygenated and deoxygenated hemoglobin in the microcirculation supports assessment of therapy, wound healing and tissue viability, accurately capturing diagnostic insight into oxygenated blood availability anywhere on the body, providing actionable data to support improved, diagnostic-driven wound care. Its features expand the application of NIR technology to include almost all skin tones, advancing tissue assessment for physicians and patients. It is cost-effective, easy-to-use, portable and completely non-invasive, requiring no patient contact or injected dyes.